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March 3, 2014 Guided Practice

Guided practice similar figures

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Page 1: Guided practice  similar figures

March 3, 2014Guided Practice

Page 2: Guided practice  similar figures

March 3, 2014Guided Practice

Page 3: Guided practice  similar figures

March 3, 2014Guided Practice

Page 4: Guided practice  similar figures
Page 5: Guided practice  similar figures

March 6, 2014Guided Practice

In 1863, Confederate troops marched from Chambersburg to Gettysburg in search of badly needed shoes. Use the ruler and the scale of the map to estimate how far the Confederate soldiers, many of whom were barefoot, marched.

Page 6: Guided practice  similar figures

March 6, 2014Guided Practice

Before the Civil War, the Mason-Dixon Line was considered the dividing line between the North and the South. Gettysburg is about 8.1 miles north of the Mason-Dixon Line. How far apart in inches are Gettysburg and the Mason-Dixon Line on the map?

Page 7: Guided practice  similar figures

March 6, 2014Guided Practice

Multi-Step Toby is making a scale model of the battlefield at Fredericksburg. The area he wants to model measures about 11 mi by 7.5 mi. He plans to put the model on a 3.25 ft by 3.25 ft square table. On each side of the model he wants to leave at least 3 in. between the model and the table edges. What is the largest scale he can use?

Page 8: Guided practice  similar figures
Page 9: Guided practice  similar figures

March 7, 2014Guided Practice

Scale Factor is always the ratio of the model’s dimensions to the actual object’s dimensions.

Page 10: Guided practice  similar figures

March 7, 2014Guided Practice

1. The dimensions of an office conference room are 12 feet by 24 feet. If the conference room blueprint dimensions are 4 centimeters by 8 centimeters, what is the scale of the blueprint?

A. 1 centimeter = 4 feetB. 1 centimeter = 8 feetC. 1 centimeter = 3 feetD. 1 centimeter = 12 feet

Page 11: Guided practice  similar figures

March 7, 2014Guided Practice

Above are two different models of a microchip. If the model of the microchip on the left measures 4 cm tall, how tall is the model of the microchip on the right?

A. 4 cmB. 10 cmC. 12 cmD. 8 cm

Page 12: Guided practice  similar figures

March 7, 2014Guided Practice

Above are two different models of the same triangular handkerchief. If the area of the model on the right is 108 sq cm, what is the area of the model on the left?

A. 27 sq cmB. 12 sq cmC. 54 sq cmD. 36 sq cm

Page 13: Guided practice  similar figures
Page 14: Guided practice  similar figures

March 11, 2014Guided Practice

Clarise drew the scale drawing below of a circular fish pond she plans to put in her backyard.

If 1 centimeter on the scale drawing represents 3 feet, what will be the diameter of Clarise's fish pond?

A. 84.78 feetB. 9 feetC. 18 feetD. 56.52 feet

Page 15: Guided practice  similar figures

March 11, 2014Guided Practice

Above are two different diagrams of the same backyard. If the length of the diagram on the left is 3 in, what is the length of the diagram on the right?

A. 6 inB. 9 inC. 1.00 inD. 16 in

Page 16: Guided practice  similar figures

March 11, 2014Guided Practice

The following blueprint of a kitchen has dimensions of 8 inches by 8 inches. The island has been highlighted in red.

The island's actual dimensions are 4ft by 2ft. If the scale of the blueprint is 1 inch = 2ft, what are the dimensions of the island on the blueprint? A. 1 ¾ in by 7/8 inB. 1 in by ½ inC. 8 in by 4 inD. 2 in by 1 in

Page 17: Guided practice  similar figures

March 11, 2014Guided Practice

The image on a movie poster was shrunk to make the DVD cover art for the movie, so that the cover art is a scale image of the poster. The poster is 45 inches wide, and the DVD cover art is 5 inches wide. If the diagonal of the poster is 6.75 feet, what is the diagonal of the DVD cover art?

A. 9 inchesB. 8 inchesC. 11.25 inchesD. 0.75 inch